Furnace for heating billets



No. 65,465. Patented Dec. 6. I898. W. SWINDELL.

FURNACE FOR HEATING BILLETS, BLOOMS, &C-

(Application filed June 14, 1898.) (No Mpdel.) 2 Sheets-Sheet 1.

FIG!

WITNESSES: INVENT THE mimus Psi-Ens cc. PHOTO-LITHO, wxsnmsrou. n. c

No. 615,465. Patented Dec. 6. I898. w. SWINDELL.

FURNAIEE FOB HEATING BILLETS, BLUUMS, &C. (Application filed June 14,1898.)

(No Model.) 2 Sheets-Sheet 2.

WITNESSES:

w: Nmzms PETERS c0, vnmo-u'mc" WASHINGTON. D c.

lE STATES PATENT Fries,

\VILLIAM SVINDELL, OF PITTSBURG, PENNSYLVANIA.

FURNACE FOR HEATING BILLETS, BLOOMS, 80c.

SPECIFICATION forming part of Letters Patent No. 615,465, dated December6, 1898. Application filed June 14, 1898. Serial No. 683,433. (Nomcdel.)

To all whom, it may concern:

Be it known that I, WILLIAM SWINDELL, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a certain new anduseful Improvement in Furnaces for Heating Billets, Blooms, &c., ofwhich improvement the following is a specification.

The object of my invention is to provide a heating-furnace which shallbe specially and desirably adapted to use as a continuous fu rnace andin the operation of which as such a comparatively low degree of heat maybe first imparted to the billets which are passed through the furnaceand thereafter the heat may be increased to any desired and determineddegree in their traverse, which is effected transversely to that of theproducts of combustion.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a vertical longitudinalsection througha heating-furnace illustrating an embodiment of myinvention at the line at a: of Fig. 2; Fig. 2, a horizontal sectionthrough the same at the line 2' [2 of Fig. 1, and Fig. 3 a transversesection at the line y 3 of Fig. 2.

The leading and essential features of my invention consist in combiningwith a heating-furnace a lateral extension or passageway having one ormore charging openings or passages at its outer end and leadingtherefrom to the comb ustion-chamber transversely to the direction oftraverse of the products of combustion through the same, said passagewaynot being provided with heating appliances, a discharge passage orpassages on the side of the furnace opposite the lateral passage-way,and a transverse partition or division wall in line with the passage-wayadapted to deflect the products of combustion thereinto and toward theopposite walls of the combustion-chamber.

My invention is herein exemplified as applied in connection with aheating-furnace of the regenerative type, with which type it may beadvantageously employed, although it is not in any wise limited inapplication thereto.

The combustion-chamber 1 is of rectangular form and provided with asuitable hearth 2 and communicates at its ends by gas-fines 3 andair-fines 4 with regenerator-chambers 5 5, provided with checker-work orfirebrick filling 6, the passage of the currents of gas and air inalternately opposite directions longitudinally through thecombustion-chamber being efiected by means of reversingvalves, which arenot shown, in the ordinary manner.

In the practice of my invention I provide a lateral extension orpassage-way 7 for the traverse, under a comparatively low initial andgradually-increasin g degree of heat, of billets, blooms, or otherarticles which are to be con tinuously heated in their passage throughthe furnace. The passage-way 7 has no grates, gas and air fines, orother direct-heating appliances, and consequently, as designed, itreceives no heat other than that which is diverted into its inner endfrom the furnace. The billets traverse from a charging opening oropenings 8 at the outer end of the lateral passage-way 7, at whichopening or openings they are introduced, through said passage-way andacross the combustion-chamber of the furnace transversely to thedirection of the passage of the hot products of combustion in saidchamber and are removed through a discharge opening or openings 9, eachcontrolled by a suitable doorin the wall of the furnace opposite thatfrom which the lateral passage-way 7 outwardly extends. The floor of thelateral passage-way is preferably inclined downwardly from its supplyend to the hearth of the furnace, so as to facilitate the movement ofthe billets, which may be effected by means of a fluid-pressure cylinderand piston in the ordinary manner, and the usual supporting water-tubes10 may be laid in the floor of the passage. Openings 11, closed bysuitable doors 12, may be provided at or near the junction of the sidewalls of the lateral passage-way with the adjacent wall of thecombustion-chamber in order to enable ready access to be had to thebillets for any desired manipulation while in the furnace.

A vertical partition or division wall 13 extends longitudinally througha portion of the length of the lateral passage-way 7 at and adjoiningthe inner end thereof and continues so as to extend transversely througha portion of the width of the combustion-chamber, or,

if preferred, may extend entirely across the combustion-chamber, asindicated by dotted lines in Fig. 2. The open space between the outerend of the partition 13 and the supply end of the lateral passage 7forms a' passage let for the traverse of products of combustion from onesideof the partition to the other, and in cases in whichthe partitionextends only partly across the combustion-chamber a passage 15 isprovided at the inner end of the partition. The partition 13 performsthe function of a deflector or distributer, by which the hot gases andproducts of combustion are diverted from their ordinary longitudinaltraverse through the combustion-chamber, and a portion or the whole ofsaid hot products, accordingly as the partition extends either partiallyor entirely across the combustion-cham her, is diverted into the lateralpassage-way 7 to act upon the billets therein. By suitably proportioning the passages 14 and 15 a greater or less degree of heat may be exertedupon the billets while traversing through the passageway 7 and beforetheir entrance into the combustion-chamber, so that a comparatively lowheat may be applied to the billets as they enter the passage-Way and theheat be thereafter progressively increased to any desired and determineddegree as they are moved through the passage-Way and through the furnaceto the point of discharge.

I claim as my invention and desire to secure by Letters Patent- 1. Thecombination, in a heating-furnace, of a combustion-chamber, a lateralpassageway opening thereinto, transversely to the direction of traverseof products of combustion through the same, and having no direct-heatingappliances, and a partition-wall extending transversely to thecombustion-chamber, and located partly therein and partly in thepassage-way, for deflecting products of combustion from thecombustion-chamber into the passage-way.

2. The combination, in a heating-furnace, of a combustion-chamber, alateral passageway opening thereinto, a partition-wall extendingtransversely to the combustion-chamber, for deflecting products ofcombustion therefrom into the passage-way, and working openings,controlled by doors, adjacent to the junction of the passage-way andcombustionchamber.

3. The combination, in a heating-furnace, of a combustion-chamber, alateral passage way opening thereinto, transversely to the direction oftraverse of products of combustion through the same, and having nodirect-heating appliances, a charging-opening and door at the outer endof said passage-way, a discharge-opening and door in the wall of thecombustion-chamber opposite said lateral passage-way, and apartition-wall extending transversely to the combustion-chamber, andlocated partly therein and partly in the passage-way, for deflectingproducts of combustion from the combustion-chamber into the passageway.

4c. The combination, in a heating-furnace, of a combustion-chamber, alateral passageway opening thereinto, a partition-wall, ex tendingtransverselv to the combustion-chamher for deflecting products ofcombustion therefrom into the passage-Way, and openings or passagesadjacent to the ends of said partition-wall, for the traverse ofproducts of combustion from one side thereof to the other, through thelateral passage-way and through the combustion-chamber, respectively.

WILLIAM SVINDEL'L.

Witnesses:

J. SNowDEN BELL, JAMES C. HERRON.

